Manufally operated screw machine



. May 25, 1943.

D. I. WILSON ETAL MANUALLY OPERATED SCREW MACHINE Filed Jun 29', 1942 5Sheets-Sheet 1 INVEINTOR5 1 BY W. Qumn May 25, 1943. '0. l. WILSON El'AL2,319,963

' MANUALLY OPERATED SCREW MACHINE Filed June 29, 1942 5 Shets-Sheet 5 22"n n j I 9 9 |l5ov 1 4 I E ,mzmwzm. l v 151 V 135 BY .Qum-,-

'- ATTORNEYS Patented May 25, 1943 MANUALLY OPERATED SCREW MACHINEDelbert I. Wilson and John Wesley Quinn, Dayton, Ohio, assignors to TheCity Engineering Company, Dayton, Ohio, a corporation of OhioApplication June 29, 1942, Serial No. 448,900

17 Claims. (Cl. 82-2) This invention relates to an improved handoperatedturning machine that is adapted to drive the work stock and to move thesame with respect to the turning tools for producing accuratelydimensioned workpieces.

Hand-operated turning machines have heretofore required that the workstock should be suitably chucked upon a spindle and the free end of thestock be centered upon a dead center. This is true particularly whenturning workpieces of any substantial length. However, it has beenextremely diflicult to chuck and center workpieces of small diameter,workpieces having small diameter and long length have been extremelytroublesome in their manufacture upon turnin machines of theconventional type.

An object of this invention is to provide a hand-.operated turningmachine that is capable of producing a workpiece of any diameter up tothe maximum size capable of being placed within the machine, and of anylength, dependent only upon the stock available.

Another object of the invention is to provide a hand-operated turningmachine wherein the work stock is moved longitudinally with respect tothe work tools, and is continuously supported immediately adjacent theturning tools.

Another object of the invention is to provide a hand-operated turningmachine wherein the turning tools are movable transversely with respectto the live spindle of the machine, and the work stock is moved by thespindle with respect to the tools longitudinally thereof to turn piecesof desired length.

Another object of the invention is to provide a hand-operated turningmachine wherein the live spindle of the machine is moved with respect tothe work tools and is adapted to carry the stock therewith forlongitudinal movement of the stock with respect to the tools, and thework tools are moved transversely with respect to the spindle by meansof a constant rise cam that is provided with calibrations fordetermining the degree of transverse movement of the turning tools.

Another object of the invention is to provide a hand-operated turningmachine wherein the work stock is moved longitudinally with respect tothe work tools, and the work tools are moved transversely with respectto the work stock, the movements being associated with one another sothat an article of predetermined configuration can be produced by thework tools merely upon regulating the longitudinal movement of the workstock.

Another object of the invention is to provide a turning machine whereinthe work stock is continuously supported immediately adjacent the worktools regardless of the portion of the article that is being worked uponby the work tools.

It is another object of the invention to provide a hand-operated turningmachine wherein the work tools are movable transversely with respect tothe work stock, and are controlled in their transverse movement by meansof a constant rise cam' or other mechanism capable of producing aconstant transverse movement of the work tools for a predeterminedmotion of the hand operated controls.

It is another object of the invention to provide a turning machinewherein the work tools are movable radially with respect to the axis ofspindle for turning stock carried thereby, and are controlled by meansof a constant rise cam calibrated to inform the operator of the machineas to the diameter being cut by the work too], and wherein the workstock is moved longitudinally with respect to the work tools by means ofthe spindle which drives the work stock for longitudinal turning andcontrolling the longitudinal turning by means of a calibrated controlapparatus that regulates the longitudinal movement of the spindle withrespect to the work tools.

It is another object of the invention to provide a hand-operated turningmachine wherein the work stock is carried by a live spindle and is movedlongitudinally thereby with respect to the turning tools, and whereinmechanism is provided for controlling the speed of rotation of thespindle as well as the longitudinal movement thereof for thread cutting.

It is another object of the invention to provide a hand-operated turningmachine wherein the work stock is moved longitudinally with respect to adrilling or boring tool so that the point of drill engagement or boringtool engagement is continuously supported to accurately center drilLorbore a workpiece.

It is another object of the invention to provide a turning machineconstructed in accordance with any of the foregoing objects that isprovided adapted to be mounted upon a base ll.

respect to the work stock, whereby a contoured workpiece can be producedby the use of a simple template form.

Another object of the invention is to provide a turning machine that ishand-operated wherein the work stock is moved longitudinally withrespect to the work tools that are in a fixed relationship with respectto one another and radially movable with respect to the work stock sothat forward turning, back turning, depth cutting, and cut-01f can beaccomplished by the use of two work tools, or more if desired.

It is another object of the invention to provide an apparatus for thework tools of the foregoing object for adjusting the cutting edges ofthe work tools so that the cutting edge of the forward turning tool willbe diametrically opposite to the cutting edge of the cut-off and backtuming tool.

Further objects and advantages will become apparent from the drawingsand the following description.

- along line 5 of Fig. 2 showing the hand-operated controls for'themachine.

Fig. 6 is an end elevational view similar to Fig. 4 showing an overheadtool for special turning work upon the work stock.

Fig. '7 is a transverse cross-sectional view taken along line of Fig. 6showing the manner of adjusting the auxiliary work tool.

Fig. 8 is an'enlarged elevational view partly in cross-section, showingthe radial adjustment for one of the work tools.

Fig. 9 is a cross-sectional view taken along line 99 of Fig. 8 showingadjustment of the work tool for longitudinally positioning the same withrespect to the opposite work tool.

Fig. 10 is an elevational view of the side of the machine showing themanner by which a workpiece can be produced from a template.

Figs. 11 and 12 show typical workpieces that can be produced upon themachine of this invention.

The machine of this invention may-be constructed as a bench modelturning machine and be driven by a source of power that is not directlysupported by or upon the machine, such as, an independent electric motoror through a line shaft drive or other similar power sources. Themachine may also be designed as a. floor model or base model machinewherein the power source for the machine is disposed within the base ofthe machine and thereby providing a unit structure. As shown in Fig. 2the turning machine III is The base l| supports a variable speed driveunit I2 consisting of an electric motor l3 and a variable drive controlunit IL A drive shaft |5 extends vfrom the variable speed'unit l4 andcarries a pulley I 5 having a belt I! extending over the drive pulley l8on the spindle I9 of the turning machine In. A control handle 29 isprovided on the variable speed drive unit H for changing the speed ratiobetween the electric motor l3 and the 'drive shaft l5. This variablespeed drive unit l4 changing the speed of rotation of the pulley |6 andthus the spindle IS.

The turning machine l0 consists of a frame or base 2| that is adapted tobe secured upon the base H or be supported upon a suitable bench ortable. A spindle housing 22 is slidably mounted upon the base 2| bymeans of a wedge shaped tongue 23" adapted to slide in a wedge shapedgroove provided in the base 2|. An adjustable gib is provided betweenthe groove 24 and the tongue 23 to take up play therebetween.

The spindle housing 22 is provided with a depending ear within thehollow interior 2'! of the base 2| and is adapted to extend thereinthrough a groove 28. The ear 26 is threaded to receive a lead screw 29that is suitably supported within the base 27 and has a worm wheel 39upon one end thereof.v The worm wheel engages a worm 3| supported upon ashaft 32 extending transversely of the base 27.

The shaft 32 supports a clutch member 33 slidably mounted upon and keyedthereto by--means of a pin 34 extending through a slot 35. The clutchmember 33 is adapted to engage the clutch face 36 of the worm 3| or theclutch face 31 of the worm wheel 38. The pin 34 extends .through aninnershaft 39 provided within the shaft 32, the shaft 39 extendingoutwardly beyond the shaft 32 and through a control handle or dial 49provided on the shaft 32. The inner shaft 39 is adapted to be shiftedlongitudinally within the shaft 32 to change position of the clutchmember 33 between the clutch faces 36 sitions.

and 31. A spring pressed ball detent 4| is provided within the base 2|and is adapted to engage recess portions in the shaft 39 to position theclutch member 33 in either of its engaged po- The worm wheel 38 engagesa worm 42 that is carried upon a shaft 43 extending from a gear changebox 44 (see Fig. '2). The gear change box 44 is provided with a driveshaft 45 that is driven by a pair of beveled gears 46 from an elongatedspur gear member 41 suitably bearinged within the base 2| of the machineID. A spur gear 48 engages the gear 47 and a gear 49 disposed upon thepulley I8 of the spindle I9, thereby, driving the gear change box 44from the spindle l9 of the machine ID for thread cutting in a manner tobe hereinafter described.

It will thus be seen that the clutch member 33 may be shifted betweenthe power driven worm wheel 39 and the hand driven worm 3| for providingpower movement to the spindle housing 22 or hand movement, as selectedby the posithe shaft 58 and is suitably keyed thereto bymeans of the keymember 54, one 'end of the pulley I8 providing the .gear 49. The shaft58 is provided with an internal bore 55 through which the work stocksextends from a supply tube support 56 (see Fig. 2) through a collet 51provided adjacent the sleeve bearing 52. The collet 51 is splitlongitudinally and is disposed within a tube 58 that is slidablypositioned within the bore 55 of the shaft 58. The tube is provided witha flange 59 adapted to engage the end of the shaft 58 to limit itstravel. The collet 51 has a flanged end 68 disposed between the taperedinner surface of the flange 59 on the tube 58 and a sleeve 6| threadedupon the end of the shaft 58 and surrounding the flange 59 of the tube58.

A spring 62 is provided between the tube 58 and a sleeve 63 slidablewithin the bore 55 of the tube 58 and having one end adjacent slots 64provided in the shaft 58. Arms 65 are pivotally secured to the sleeve 66carried by the shaft 58 by means of the pins 61. These arms 55 haveinwardly directcd ears 68 adapted to engage the end of the tube 83, andforwardly extending arms 69 adapted to ride upon the tapered surfaces 18provided upon the sleeve 1| positioned upon the shaft 50.

The sleeve 1I provides the inner race of a ball bearing surrounding theshaft 58, the outer race 12 being engaged by a yoke 13 operated in aforward and rearward direction by means of a hand lever extending fromthe spindle housug 22.

Movement of the hand lever 15 in a forward direction moves the sleeve 1|in a leftward direction to permit the arms 69 to ride down upon thetapered surfaces 18 and thus release the sleeve 63 to permit release ofthe spring 62 upon the tube 58 and thus release the frictionalenzagement of the collet 51 upon the work stock extending therethroughso that the stock can be advanced as desired. Return of the hand lever15 into the position shown in Figs. 1 and 3 clamps the collet 51 uponthe work stock to drive the stock rotationally and to move the sameforwardly with respect to the work tools of the ma- :rhine when thespindle housing 22 is moved by means of the hand-operated lever 48 orthe power worm wheel 38.

A guide bushing 16 that may be either revolving or stationary, isprovided within the guide bushing support 18 secured to the base 2|forwardly of the spindle I9. The guide bushing 6 is of the properdiameter to receive the work stock 11 and is in close fittingrelationship therewith to prevent chatter of the work stock in the guidebushing 18 or in the guide bushing support 18. Since the work stock isfrictionally secured within thecollet 51 within the spindle I9, it willbe moved through the guide bushing 16 when the spindle housing 22 isadvanced by means of the hand wheel 48, which may also be power fed ifdesired. The guide bushing 16 thus provides a permanent support for thework stock that continuously supports the work stock during all turningoperations.

The turning tools 19 and 88 are carried upon a rocker arm 8| that ispivoted to the guide bushing support housing 18 by means of a pivot pin82. The rocker arm 8| has a tool support 83 that carries one of theturning tools 19, which in this instance is a cut-off and a back turningtool. The work tool 88 is a forward turning tool and is carried by thetool support 84. The tool support 84 is constructed and arranged so thatthe cutting edge of the work tool 88 can be accurately adjusted radiallywith respect to the axis of the spindle I9 and longitudinally withrespect to the cutting edge of the work tool 19 so that the forwardcutting edge of the work tool 88 is diametrically opposite the rearwardcutting edge of the work tool 19, whereby radial adjustment of eitherwork tool 19 or 88 will produce a turning operation at exactly the sameradial point. p The tool support 84 is disclosed in Figs; 8, 9 and 10.The tool support consists of a base member 85 that is provided with awedge shaped tongue 86'slidable within a wedge shaped groove 81 providedin the tool carriage 88 of the tool support 84. The carriage 88 isprovided with an overhanging and depending ear 89 in alignment with thetongue 86. A threaded screw member 9| extends through the ear 89 and isfreely rotatable therein, but is prevented from axial movement withinthe ear 89 by means of suitable collars 98. The screw threaded member 9|engages screw threads 92 provided in the tongue 86, whereby rotation ofthe member 9| will move the tool carriage 88 with respect to the basemember 85, thereby changing its radial position with respect t'o'theaxis of the spindle I9. A suitable calibrated dial is provided upon thescrew thread member 9| for indicating the position of the work toolradially with respect to the axis of the spindle. A pointer 94 isprovided for reading the scale upon the dial 93.

The tool 88 is carried within a tool holder 95 that is provided with ashaft 96 supported within the carriage 88 and is disposed parallel tothe axis of the spindle I9 so that movement of the shaft 96 will movethe tool holder 95 longitudinally of the axis of the spindle I9 andparallel therewith. Means is provided for moving the shaft 96 andconsists of a screw threaded member 91 in threaded engagement with theshaft 96 as shown at 98. The screw threaded. member 9'! extends througha plate 98 secured to the tool carriage 88 and is prevented from axialmovement by the collar I88. A calibrated dial IN is provided forindicating the tool holder 95 and a pointer I82 is provided for readingthe dial I 8|. The tool 88 is carried within the slot I83 in the toolholder 95 and is secured therein by means of the set screws I84.

The tool 19 is carried within the tool holder 83 which may be astationary tool holder wherein the tool holder 19 is manually adjustedradially with respect to the axis of the spindle I9 and secured inposition in the tool holder 83 by means of the set screw I85.

To set the tools 19 and 88 for proper cooperation and turning operationsupon the work stock 11, the work tool 19 may first be manually adjustedwith respect to the work stock 11 and an initial cut made to determinethe exact diameter at which the cutting edge of the tool 19 is set. Thetool 88 is then fastened in the tool holder 95 and the tool carriage 88is adjusted radially by means of the screw thread member 9| to positionthe cutting edge of the tool 88 at precisely the same radial distancefrom the axis of the work stock 11 as the cutting edge of the work tool19. As previously mentioned the work tool 19 is a cut-elf and backturning tool, and the turning tool 88 is a forward turning tool.Therefore, the rear cutting edge of the turning tool 19 must be placeddiametrically opposite of the forward cutting edge of the turning tool.80 so that when the turning tool completes a forward cut the rearwardcutting edge of the cut-off tool 19 will engage the work stock 11 atprecisely the point at which the forward edge of the turning tool 80stopped its forward turning to permit the workpiece to be cut off at aprecise length.

Therefore, the tool holder 95 for the turning tool 80 is adjustedlongitudinally by means of the screw thread member 91 to place theforward edge of the cutting tool 80 precisely opposite the rearwardcutting edgeof the worktool I9. Suitable means is provided for lockingthe screw thread members 9| and 91 in place after the adjustment hasbeen made to prevent any alteration in the position of the tool 80 withrespect to the tool 19.

The work tools 19 and 80 are moved radially with respect to the workstock 11 to produce depth cuts and thus obtain various turned diameters.The work stock 11 is moved longitudinally with respect to the work tools19 and 80 to produce longitudinal turning thereupon at any particulardepth at which either tool 19 or 80 is set. To control the depth ofposition of the turning tools 19 and 80 the rocker arm 8| is pro-.

vided with a cam follower I06 secured to one end of the rocker arm iii.The cam follower I06 engages the surface of a constant rise cam I01carried upon a cam shaft I08 and secured thereto by a suitable meanssuch as the set screw I09. The surface of the cam I01 has been generated.as a constantrise surface so that the rise of the surface of the camwill be a predetermined amount for each degree of rotati0n,0f the cam.Therefore, if each degree of rotation of the cam I01 causes apredetermined rise of the cam follower I06, the turning tools 19 and 80will be moved radially toward or away from theaxis of the work stock 11a determined dimension for each degree of rotation of the cam I01. Adial I I0 can therefore cooperate with the cam I01 and be rotatedtherewith, the dial being calibrated in equal increments, each incrementrepresenting a determined dimension of radial travel of the work ,toolsI0 and 80 toward the axis of the work stock 11. Therefore, the dial canbe calibrated in inches or preferably in thousands of an inch anld canbe read directly by means of a pointer II Depending upon the directionof rotation of the constant rise cam I01, one or the other work tools or80 will engage the work stock 11. If the cam I01 is rotated in aclockwise direction as viewed in Fig. 4., the work tool 19 will be movedradially into the work stock 11, while if the cam is rotated in acounterclockwise direction the work tool 80 will be moved radially intthe work stock I1, the cam follower I06 causing the rocker arm al topivot about the pin 82 and thus. move the work tools 19 and 80. A springII2 has one end thereof secured to a suitable stationary support uponthe base 2I' and the opposite end thereof secured to the rocker arm 8|to insure engagement of the cam follower I06 upon the surface of the camI01.

The torque reaction of rotation of the work stock 11 in acounterclockwise direction as indicated in Fig. 4 is such that when the.work tool 19 engages the work stock 11,. the rocker 1 arm BI is urgedrotationally about the pivot .82

in a counterclockwise direction thereby tending to retain the camfollower I08 upon the cam I01.

While if the work tool 80 engages the work stock 11 the force reactioncaused by engagement of the cutting tool with the work stock is suchthat there is a tendency for the work tool to be lifted in a verticaldirection and thu tend to rotate the rocker arm 8i about the pivot 82and again retain the cam follower I06 in engagement with the surface ofthe cam I01.

The cam I01 is rotated manually by means of a hand wheel 3 carried upona shaft H4. The shaft I I4. The shaft I I4 extends within a hollow shaftII5 suitably bearinged in a casing H6 secured to the base 2|. The ballbearings I I1 support the shaft I I5 which carries a worm I I8. Theshaft I I4 is pinned to the shaft H5 by means of pins I I9 extendingthrough th respective shafts. The worm I I8 engages a worm wheel I20secured to the cam shaft I08 by any suitable means. Therefore, rotationof the hand wheel II3 produces rotation of the constant rise cam I01.The operator of the machine can read the degree of movement of they worktools 19 and 80 direct from the dial IIO that is rotated with the camI01. If desired the dial can be calibrated in both directions from azero position so that the radial position of either of the tool isindicated. Preferably, the dial IIO frictionally engages the cam shaftI08 for rotation therewith so that the dial IIO can be rotated withrespect to the constant rise cam I01 when initially setting either ofthe work tools 19 or adjacent the work stock 11. When either tool ispositioned for an initial cut upon the work stock, the dial I I0 can berotated to place the zero mark adjacent the pointer I I I, therebypermitting direct reading of the diameter being turned by the work tool.

The control handle or .dial 00 for moving the spindle housing 22longitudinally upon the base 2| is preferably constructed and arrangedas a micrometer dial having the handle I23 for rotating the dials, thedial I24 being an inch" dial, while the dial I25 is a thousandths dial,so that the longitudinal travel of the spindle housing 22 can beaccurately controlled and, therefore, the longitudinal turning cuts madeupon the work stock carried by the spindle can be accurately regulated.If desired an inch scale i26 can be placed on the base 2| and a vernierscale I21 can be placed upon the spindle housing I22 cooperating withthe inch scale I26.

The hand wheel II3 may also be a micrometer dial having an inch dial anda thousandths dial in the same manner as the hand wheel 40.

The turning machine of this invention is particularly adaptable forproducing workpieces of extreme accuracy and of any diameter up to thecapacity of the guide bushing 16. Typical workpieces that can beproduced on the turning machine of this invention are shown in Figs. 11and 12. It will be noted that the workpiece shown in Fig. 11 has anextremely small diameter por: tion I2I and a Errge diameter portion I22.The large diameter ortion may be substantially the external diameter ofthe work'stock, while the diameter I 2I may be extremelythin and long. Aworkpiece of this type, particularly when it is a small member. isextremely difficult to produce upon an ordinary turning machine thatrequires centering of the work stock, or requires that the work stockthat is to .be turned shall extend be-..

yond the chuck for holding the stock. In the example shown in Fig. 11,the workpiece of the entire length of the articleywould have to extendfrom the chuck of an ordinary turning machine and if the outer end wasnot centered to permit turning of the small diameter, difliculty pieceupon the machine of this invention the work stock "is clamped within thecollet 51 of the spindle I9 by means of operation of the clamping handle15. The turning tools 13 and 80 are then adjusted to the externaldiameter of the work stock in a manner heretofore described so that thecutting edge thereof is positioned like distances from the center of thework stock 11 and their cutting edges have been prepositioned foraccurate transverse alignment in a manner heretofore described. The dialIII] for the constant rise cam I01 can then be set on zero position. Thework stock is then advanced through the guide bushings 16 by rotation ofthe hand wheel 40, which may also be power fed if desired, until theforward turning tool 30 engages the work stock. The dials I24 and I25 onthe hand wheel 40 can then be set to zero. The machine is now set formaking any length of cut or any depth of cut upon the work stock 11 andthe dimensions of each cut canbe accurately determined by the dials I24and I25 for length cut, and the dial III) for depth. out. Since thespindle I9 drives the work stock 11 and advances the same through theguide bushing support, which continuously supports the full diameter ofthe work stock, it can readily be seen that a turning operation beingperformed upon the work stock immediately adjacent the guide bushingsupport will be an accurate turning operation because there can be nochatter or vibration of the work stock with respect to the work toolbecause the maximum diameter of the work stock is always being supportedby the guide bushing 15.

After the small diameter portion I2l of the workpiece shown'in Fig. 11has been turned, the turning tool is backed off to the proper diameterfor the second work portion I28 by means of the hand wheel H3 and thelength thereof controlled by means of the hand wheel 40. These series ofoperations can be performed sequentially for producing the workpiece,moving the tools in and out, and moving the work stock forward until thecompleted article is formed. The cut-ofl tool 19 can then perform itsoperation, and if at any time back turning is, required upon theworkpiece the turning tool 19 is always available and the cutting edgethereof will always begin at the point left by the forward turning tool8|! so that there will be no loss of accuracy in the turning of theworkpiece.

As previously mentioned the spindle housing 22 can be power driven inits forward motion by means of the worm 42 and the worm wheel 38 whenthe clutch 33 engages the worm wheel 38. In order to turn threads uponthe work stock 11 the variable speed driv unit I2 is adjusted to Producethe proper rotation of the work stock 11 depending upon the adjustmentof the gear change box 44. The drive from the spindle is through thegear change box 44 to the lead screw 23 produces the proper forwardmotion'of the spindle housing 22 that is proportioned to the speed ofrotation of the spindle I 5 so that threads of various types can be outupon the work stock 11. It is; of course, understood that the work tool35 is properly positioned with respect to the work stock 11 to producethe desired depth'cut when turnin threads upon the work stock.

There are times when it is desirable to feed the work stock in a forwardmotion at a constant rate to produce a high degree of surface finishupon the work stock. The power drive for the lead screw 23 provides forsuch forward power feeding of the spindle I9, as controlled by thesetting of the gear change box 44.. The feeding speed can be changedaccording to the type of metal that is being turned in the machine.

When manufacturing certain types of workpieces it may be necessary toproduce a surface upon the article that cannot ordinarily be produced bya common turning tool of either the forward turning, cut-off or backturning types. At these times it would be desirable to provide meanswhereby a particular cut could be made upon a workpiece without alteringthe relationship of the cutting tools carried upon the turning machine.To provide for such an expediency, an auxiliary tool support I30, orsupports, may be provided above the guide bushing support housing 18 asshown in Fig. 6. The tool I3I carried upon the tool support I30 may haveany cutting .face desired for producing a particular surface of boltsI34. A guide member I35 is secured to the bracket I33 by means of a boltI36. The guide I35has a dovetail groove I31 therein adapted to receivean extending dovetail I38 provided on a tool carrier member I39 topermit the tool carrier to move vertically upon the guide member I35.The tool I3I is secured to the tool carrier by means of set screws I40.A plate MI is secured to the tool carrier I39 and extends over the guidemember I35 so that springs I42 extending from the guide member I35 canengage the plate I to constantly urge the same in an upward direction,whereby the tool I3I is held out of engagement with the work stock 11.

The handle I32 is pivoted upon an ear I43 carried upon the bracket I33by means of a, pin I44. The handle I32 has an arm I45 extendingtherefrom adapted to engage a stop I46 for limiting the downwardmovement of the tool I3I. The

precise travel, of the tool I3I is regulated by means of a verniercontrol member I41 in threaded engagement with the handle I32 and inengagement with the plate I. A locking screw I48 is provided for thevernier control member It is to be understood that while the auxiliarytool has been shown and described as a turning tool yet other forms oftool means can be used, such as a cross drilling attachment, a slottingattachment and others. The location of the auxiliary tool can beadjusted with respect to the work stock in the same manneras the worktool 30 if his desirable by merely providing a similar type of work toolmounting for the auxiliary work tool.

The machine of this invention is also capable of producing any contouredarticle by merely advancing the work stock with respect to the worktools. As shown in Fig. 10 a template IIlcan be mounted adjacent theleft side of the machine as viewed in Fig. '4. The template I50 may beguide I55 provided upon a guide bracket I58 disposed adjacent the guidebushing support'housing 18 and adjacent the tool support 83.

A template follower I5'I may be adjustably supported upon the camfollower I08, or can-be su ported directly upon the tool support 83.Screw thread means I58 is provided for vertically adjusting the templatefollower IS! with respect to the template surface I59. .Movement of thetemplate I50 causes the template follower I51 to move over the templatesurface I59 and thereby rock the work tools I9 and 80 with respect tothe axis of thework stock 11 sothat the form of the template isreproduced upon the work stock 11. the form of the template will not beexactly the form produced upon the work stock because the degree ofvertical movement of the template follower I51 must be larger than theradial movement of the work tool to produce a given depth 7 of cut bythe work too]. The longitudinal or length cuts produced by the face ofthetemplate will equal the length of the cuts produced upon theworkpiece because the template and the workpiece are advanced in unison.However, the contour of the template can readily be calculated toproduce the desired depth of out because there is a known ratio betweenthe ratio of the template follower I51 and the cutting edges of the worktools I9 and 80.

While the form of the apparatus disclosed hereinshows a preferred formof the machine, it is to' be understood that the machine is capable ofconsiderable mechanical alteration without departing from the spirit ofthe invention, and that all modifications that fall within the scope ofthe appended claims are intended to be included herein.

Having-thus fully described our invention, what we claim as new anddesire to secure by Letters Patent is:

a spindle mechanism for engaging and driving work stock, a mechanism formoving the spindle of the spindle mechanism axially, a work tool supportmechanism for moving a work tool cari ried thereby substantiallyradially with respect to said spindle and for holding the toolstationary with respect to longitudinal movement,

and a constant rise cam for actuating said work tool support mechanismto move said work tool 75 edge thereof closely adjacent Of course, itwill be understood that substantially radially with respect to the axisof said spindle.

3. In a turning machine the combination of.

a spindle mechanism for engaging work stock and driving the same,mechanism for moving the spindle' of the spindle mechanism axiallycalibrated distances, work tool support mechanism for moving a work toolsubstantially radial with respect to the axi of said spindle and forholding thework tool stationary longitudinally with respect to saidspindle, and a constant rise cam for-actuating said tool supportmechanism to move the tool carried by the support subing the spindle ofsaid spindle mechanism axially in calibrated increments, a work stockguide support through which the work stock is'advanced by said spindlemechanism, a tool support mechanism pivotally mountedadjacent the workstock guide support, and a constant rise cam having calibrated mechanismassociated therewith for rotating said work tool about the pivot for thesame a determined increment for each degree of rotation of said cam, tothereby move said work tool substantially radially with respect to theaxis of the work stock being fed through said work stock guide supportby said spindle mechanism.

5. A manually operated turning machine which includes the combinationof, a spindle mechanism for engaging work stock and driving the same, amanually operated calibrated mechanism for moving the spindle of saidspindle mechanism axially in calibrated increments of travel, a workstock guide support through which'the work stock is fed by said spindle,a work tool support pivotally mounted adjacent said work stock guidesupport adapted to have turning tools mounted thereon for engaging workstock extending through said work stock guide support, and a manuallyoperated constant rise cam having calibrated mechanism associatedtherewith for rotating said work tool support a predetermined incrementfor each increment of rotation of said cam.

6. In a turning machine the combination which includes a spindlemechanism for engaging work stock and driving the same, a work stockguide support, work tool support means disposed adjacent said work stockguide support and adapted to havetools disposed therein with the cuttingedge thereof closely adjacent said work stock guide support, mechanismfor axially moving said spindle with respect to work stock guide supportto feed work stock therethrough and move .the same longitudinally withrespect to the work tools carried by said work tool support wherebylongitudinal turning cuts are made upon Work stock. and mechanism forsupporting said'work tool support for moving the work tool carriedthereby radially with respect to the work stock, whereby depth cuts aremade upon the work stock.

7. In a turning machine the combination which includes a spindlemechanism for engaging work stock and driving the same, a work stockguide support, work tool support means disposed adjacent said work stockguide support and adapted to have tools disposed therein with thecutting said work stock guide support, mechanism for axially moving saidspindle with respect to work stock guide support to feed work stocktherethrough and move the same longitudinally with respect to the worktools carried by said work tool support whereby longitudinal turningcuts are made upon work stock,

means pivotally supported adjacent said work stock guide support forsupporting said tool support, and a constant rise cam for actuating saidmeans to move said tool support substantially radially with respect tothe axis of said work stock guide support a predetermined increment foreach degree of rotation for said cam, whereby calibrated depth cuts aremade upon work stock extending through said work stock guide support.

8. A hand-operated turningmachine which includes the combination of,-aspindle mechanism for engaging and driving work stock, a manuallyoperable mechanism for moving said spindle mechanism axially havingcalibrated mechanism associated therewith for indicating the degree ofmovement of the spindle mechanism, a work stock guide support disposedadjacent said spindle mechanism through which the work stock is fed bysaid spindle mechanism, work tool support to move the work tools carriedthereby substantially ra'dially to the work stock guide support andmaintain the work tool stationary longitudinally,

I a constant rise cam for actuating said work tool means disposedadjacent said work stock guide support adapted to receive turning toolsfor positioning the same closely adjacent said work stock guidesupportand having means for mounting the same to move the Work tools carriedthereby substantially radially to the work stock guide support andmaintain the Work tool stationary longitudinally, and a manuallyoperable rotatable means for actuating said work tool support means tomove the work tools carried thereby radially a determined increment foreach degree of rotation of said rotatable means.

9. A hand-operated turning machine which includes the combination of, aspindle mechanism [or engaging and driving work stock, manually operatedmechanism for moving said spindle mechanism axially having calibratedmechanism associated therewith for indicating the degree of movement ofthe spindle mechanism, a work stock guide support disposed adjacent saidspindle mechanism through which the work stock is red by said spindlemechanism, work tool support means disposed adjacent said work stockguide support adapted to receive turning tools for positioning the sameclosely adjacent said work stock guide support and having means forpivoting the same to move the work tools carried thereby substantiallyradially to' the work stock guide support and maintain the Work toolstationary longitudinally, a constant rise cam for actuating said worktool support means to move the work tools carried thereby radially adetermined increment for each degree of rotation of said cam, andmanually operated calibrated mechanism for actuating said constant risecam and determining the degree of rotation thereof.

10. A hand-operated turning machine which includes the combination of, aspindle mechanism for engaging and driving work stock, a manuallyoperated mechanism for moving said spindle.

mechanism axially having calibrated mechanism associated therewith forindicating the degree of movement of the spindle mechanism, a work stockguide support disposed adjacent said spindle mechanism through which thework stock is fed by said spindle mechanism, work .tool support meansdisposed adjacent said work stock guide support adapted to receiveturning tools for positioning the same closely adjacent said work stockguide support and having means for pivoting the same support means tomove the work tools carried thereby radially a determined increment foreach degree of rotation of said cam, and mechanism for adjusting one ofsaid turning tools radially with respect to the other.

11. A hand-operated turning machine which includes the combination of, aspindle mechanism for engaging and driving work stock, a manuallyoperated mechanism for moving said spindle mechanism axially havingcalibrated mechanism associated therewith for indicating thedegree ofmovement of the spindle mechanism, a work stock guide support disposedadjacent said spindle mechanism through which the work stock is fed bysaid spindle mechanism, work tool support means disposed adjacent saidwork stock guide support adapted to receive turning tools forpositioning the same closely adjacent said work stock guide supporthaving means for pivoting the same to move the work tools carriedthereby substantially radially to the work stock guide support andmaintain the work tool stationary longitudinally, a manually operablerotatable means for actuating said work tool support means to move thework tools carried thereby radially a determined increment for eachdegree of rotation of said rotatable means, mechanism for adjusting oneof said turning tools radially with respect tothe other, and mechanismfor adjusting the adjustable tool longitudinally with respect to theother tool to position the cutting limits of the edges of the cuttingtools diametrically radial with respect to one another.

12. A hand-operated turning machine which includes the combination of, aspindle mechanism for engaging and driving work stock, a manuallyoperated mechanism for moving said spindle mechanism axially havingcalibrated mechanism associated therewith for indicating the degree ofmovement of the spindle mechanism, a. work stock guide support disposedadjacent said spindle mechanism through which the work stock is fed bysaid spindle mechanism, work tool support means disposed adjacent saidwork stock guide support adapted to receive tuming tools for positioningthe same closely adjacent said work stock guide support having means forpivoting the same to move the work tools carried thereby substantially.radially to the work stock guide support and maintain the work toolstationary longitudinally, variable speed power means for driving saidspindle and a gear change mechanism drivingly connecting said spindlewith the mechanism for axially moving the same to power drive the axialmovement of said spindle.

13. In a hand-operated turning machine the combination of a spindlemechanism for engaging and driving work stock, manually operated meansfor moving said spindl mechanism axially, work stock guide support meansdisposed adjacent said spindle mechanism through which work stock is fedby said spindle mechanism, work tool support means disposed adjacentsaid work stock guide support having means to receive tools thereon thatare adapted to be moved substantially radial to the axis of work stock,f template means carried by said spindle mechanism for movementtherewith, and means on said work tool support means for engaging saidtemplate to guide the work tool carried by the work tool support in apredetermined pattern.

14. In a hand-operated turning machine the combination of a spindlemechanism for engaging and driving work stock, manually'operated meansfor moving said spindle mechanism axially, work stock guide supportmeans disposed 5 adjacent said spindle mechanism through which workstock is fed by said spindle mechanism, work tool support meanspivotaily mounted ad jacent said work stock guide support having meansto receive work tools and adapted to rock the work tools substantiallyradial to the axis of the work stockextending through the work stock vguide support, a template carried by said spindle mechanism for movementtherewith, and means 'on said tool support for engaging said template 1,to rock said tool support in a predetermined pattern determined by saidtemplate.

15. In a hand-operated turning machine the combination of a spindlemechanism for engaging and driving work stock, manually operated 20means for moving said spindle mechanism axially, work stock guidesupport means disposed adjacent said spindle mechanism through whichwork stock is fed by said spindle mechanism, work tool support meanspivotally mounted adjacent said work stock guide support having means toreceive work tools and adapted to rock the work tools substantiallyradial to the axis ,of the work stock extending through the work stockguide support, a template carried by said spindle mechanism for movementtherewith,

' means on said tool support for engaging said template to rock saidtool support in a predetermined pattern determined by said template,said template having portions thereon for determining length turningthat are equal to the length a rotatable spindle mechanism for engagingand driving work stock and movable axially of the spindle, a work stockguide support for supporting the work stock as fed therethrough by saidspindle mechanism, a turning too-l movable substantially radially withrespect to the axis of the work stock, and rotatable means formovingsaid work tool a determined transverse distance for each degree ofrotation thereof.

' 17. In a turning'machine the combination of, a spindle mechanismforengaging work stock and driving the same, mechanism for moving thespindle of the spindle mechanism axially calibrated distances, work toolsupport m'echanism for moving a work tool substantially radial withrespect to the axis of said spindle and for holding the work. toolstationary longitudinally with respect to said spindle, and rotatablemeans for moving said work tool a determined transverse distance foreach degree of rotation thereof for actuating said tool supportmechanism to move the tool carried by the support substantially radialto the axis of the spindle and having mechanism associated therewith forrotating said rotatable means in predetermined calculated increments.

DELBERT I. WILSON. JOHN WESLEY QUINN

